Radiation protection dosimetry最新文献

Monitoring and analysis of the internal exposure of 131I-treatment workers in Nuclear-Medicine Departments in Jiangsu Province from 2021 to 2023. 2021 - 2023年江苏省核医学部门131i治疗人员内照射监测分析

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-06-16 DOI: 10.1093/rpd/ncaf065

Zihao Zhang, Jiayi Ma, Xiaoyong Yang, Xiaodong Shi, Jin Wang

引用次数: 0

Radiation exposure reduction using an equalization filter during percutaneous coronary intervention: a preliminary study. 经皮冠状动脉介入治疗期间使用均衡滤光器减少辐射暴露：初步研究。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-06-06 DOI: 10.1093/rpd/ncaf062

Nao Ichikawa, Atsushi Fukuda, Takuma Hayashi, Yosuke Hattori, Kosuke Matsubara

引用次数: 0

Issues in monitoring orthopedic surgeons with active personal dosemeters when exposed to pulsed X-ray fields during orthopedic procedures. 在骨科手术过程中暴露于脉冲x射线场时使用主动个人剂量计监测骨科医生的问题。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-06-05 DOI: 10.1093/rpd/ncaf061

Munehiko Kowatari, Koichi Nakagami, Yasukazu Hijikata, Kazuta Yamashita, Yuta Hirai, Satoru Matsuzaki, Takashi Moritake, Tomoya Tsuji, Hayo Zutz, Steffen Ketelhut, Oliver Hupe

{"title":"Issues in monitoring orthopedic surgeons with active personal dosemeters when exposed to pulsed X-ray fields during orthopedic procedures.","authors":"Munehiko Kowatari, Koichi Nakagami, Yasukazu Hijikata, Kazuta Yamashita, Yuta Hirai, Satoru Matsuzaki, Takashi Moritake, Tomoya Tsuji, Hayo Zutz, Steffen Ketelhut, Oliver Hupe","doi":"10.1093/rpd/ncaf061","DOIUrl":"https://doi.org/10.1093/rpd/ncaf061","url":null,"abstract":"It is crucial to monitor healthcare workers' radiation exposure, especially given the increasing reliance on X-ray imaging technologies. In response to new evidence that the threshold for lens opacity is lower than previously thought, the International Commission on Radiological Protection (ICRP) has revised the annual dose limit for exposure to the lens of the eye. After the revision of the annual eye lens dose limit, the new survey on the dosemeter wearing rate was conducted in Japan. The result showed that despite the presence of monitoring protocols, the dosemeter wearing rate among healthcare workers was still low. Compliance often lacked robust verification measures, especially in smaller medical facilities. Active personal dosemeters (APDs) are commonly used in Japan, although studies suggest that they may underestimate exposure in certain settings, such as pulsed X-ray fields. Passive dosemeters, on the other hand, serve as legal dosemeters, offering a more accurate assessment of radiation exposure. This article addresses issues related to the monitoring of healthcare workers using APDs and clarifies concerns regarding the use of APDs by orthopedic surgeons during procedures involving high-dose X-ray exposure. A series of performance tests suggested that the APDs worn by orthopedic surgeons, who are often exposed to higher dose rates near patients, may underestimate radiation levels during procedures. This underestimation occurs because the surgeons are exposed to pulsed, scattered X-ray fields with energies ranging from 20 and 100 keV. The results also suggest monitoring techniques should be improved to ensure the safety of healthcare workers.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144234955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Establishing local diagnostic reference levels for adult whole-body PET/CT in Malaysia. 在马来西亚建立成人全身PET/CT的当地诊断参考水平。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-06-05 DOI: 10.1093/rpd/ncaf053

Abdallah Al Said, Azhar Abdul Rahman, Fatin Nadhirah Binti A Halim, Laith Albadarneh, Ammar A Oglat, H H Saleh, Wesal Shloul, Yahya Alshloul

{"title":"Establishing local diagnostic reference levels for adult whole-body PET/CT in Malaysia.","authors":"Abdallah Al Said, Azhar Abdul Rahman, Fatin Nadhirah Binti A Halim, Laith Albadarneh, Ammar A Oglat, H H Saleh, Wesal Shloul, Yahya Alshloul","doi":"10.1093/rpd/ncaf053","DOIUrl":"10.1093/rpd/ncaf053","url":null,"abstract":"Background: The combination of positron emission tomography (PET) and computed tomography (CT) scanning has significantly transformed the field of nuclear medicine.Purpose: This study aims to establish local diagnostic reference levels (LDRLs) for adult positron emission tomography/computed tomography (PET/CT) scans utilizing three radiotracers:18F-fluorodeoxyglucose (18F-FDG), 68Gallium-prostate-specific-membrane-antigen (68Ga-PSMA), and 68Gallium-etraazacyclododecane-tetraacetic-acid-octreotide (68Ga-DOTATATE).Methods: Demographic data, radiation dose information, scanner PET/CT system specifications, and acquisition protocols were collected from the Department of Nuclear Medicine at Penang Hospital in Malaysia. The LDRL was determined by calculating the 50th percentile.Results: The proposed LDRLs values for whole-body 18F-FDG, 68Ga-PSMA and 68Ga-DOTATATE scans were 264 MBq, 194.07 MBq, and 186.85 MBq, respectively. The proposed LDRL for the diagnostic CT parameters (CTDIvol and DLP) associated with whole-body 18F-FDG PET/CT scans were 4.04 mGy and 412.25 mGy.cm, while proposed LDRL values for 68Ga-PSMA and 68Ga-DOTATATE scans were 4.33 mGy and 452.16 mGy.cm, and 4.51 mGy and 468.69 mGy.cm, respectively.Conclusion: The administered activity of 18F-FDG, 68Ga-PSMA, and 68Ga-DOTATATE examinations can be reduced without compromising or affecting the image quality. The proposed LDRL values for the CT parameters of the whole-body 18F-FDG examinations were the lowest among all compared values, but 68Ga-PSMA and 68Ga-DOTATATE examinations require further studies to optimize patient radiation doses in Malaysia and other regions while maintaining image quality.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":"568-576"},"PeriodicalIF":0.8,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144094346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiation absorbed dose efficacy of 177Lu-DOTATATE in radionuclide therapy of neuroendocrine tumors: a hybrid study of patient and simulation. 177Lu-DOTATATE在放射性核素治疗神经内分泌肿瘤中的辐射吸收剂量效应：病人与模拟的混合研究。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-06-05 DOI: 10.1093/rpd/ncaf054

Alireza Seyedabadi, Pejman Porouhan, Hamid-Reza Sadoughi, Ruhollah Ghahramani-Asl

{"title":"Radiation absorbed dose efficacy of 177Lu-DOTATATE in radionuclide therapy of neuroendocrine tumors: a hybrid study of patient and simulation.","authors":"Alireza Seyedabadi, Pejman Porouhan, Hamid-Reza Sadoughi, Ruhollah Ghahramani-Asl","doi":"10.1093/rpd/ncaf054","DOIUrl":"10.1093/rpd/ncaf054","url":null,"abstract":"Recent developments in targeted radiopharmaceuticals offer promising options for diagnosis and treatment by specifically targeting the overexpressed somatostatin receptors in neuroendocrine tumors (NETs). This study aims to assess the radiation absorbed dose efficacy of 177Lu-DOTATATE in radionuclide therapy of NETs. Four patients were selected for imaging using 177Lu-octreotide or DOTATATE via Single photon emission computed tomography/Computed tomography (SPECT/CT). The absorbed doses were calculated employing the Medical Internal Radiation Dose (MIRD) method and S-value tables associated with 177Lu, utilizing the GEANT4 Application for Tomographic Emission (GATE) calculation code. The mean percentage differences in the S-values between the GATE and IDAC2.1 calculation methods were -0.7 for S (Spleen→Spleen), -3.5 for S (Kidneys→Kidneys), and 4.9 for S (Liver→Liver). The mean absorbed doses from the GATE were 0.076, 0.20, 0.29, and 0.47 mGy/MBq for the liver, kidneys, spleen, and tumors, respectively. Assessment of the results obtained from the GATE code as a voxel-level dose calculation tool in non-uniform media showed that 177Lu-DOTATATE may provide beneficial therapeutic effects.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":"602-611"},"PeriodicalIF":0.8,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144128460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A preliminary study on the environmental monitoring, and estimation of the environmental dose in a high natural background radiation area of Ramsar, Iran. 伊朗拉姆萨尔高自然本底辐射区环境监测和环境剂量估计的初步研究。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-06-05 DOI: 10.1093/rpd/ncaf051

Sedigheh Sina, Mehrnoosh Karimipourfard, Fatemeh Lotfalizadeh, Zahra Rakeb, Fatemeh N Alizadeh, Amirali Falakian

{"title":"A preliminary study on the environmental monitoring, and estimation of the environmental dose in a high natural background radiation area of Ramsar, Iran.","authors":"Sedigheh Sina, Mehrnoosh Karimipourfard, Fatemeh Lotfalizadeh, Zahra Rakeb, Fatemeh N Alizadeh, Amirali Falakian","doi":"10.1093/rpd/ncaf051","DOIUrl":"10.1093/rpd/ncaf051","url":null,"abstract":"High natural background radiation areas (HNBRAs) worldwide contribute additional radiation doses to humans, plants, and land animals. Among these regions, Talesh Mahalleh in Ramsar, Iran, is notable for having the highest levels of natural background radiation in the world. This study aimed to assess the natural radioactivity in this region. The study was performed in three phases: (i) analyzing the activity concentrations of radioactive elements in samples of soil, water, and plants, collected from various parts of Talesh Mahalleh, by gamma spectroscopy using a high-purity germanium detector. (ii) Measurement of the environmental radiation doses in different locations of the high background area using thermoluminescence dosimetry (TLD), for 2 months. (iii) The environmental radiation monitoring using a calibrated survey meter. The concentrations of natural radioactive materials, like Ra-226, Th-232, and K-40 activity were measured in soil, water, and plants. Based on the results, the maximum concentration of Ra-226 in the soil samples prepared from Talesh Mahalleh was found to be 16 687 Bq/kg. The survey meter indicated the dose rates of 2.51 to 8.43 μSv/h in the high background area of Talesh Mahalleh, which is much higher than the average natural background in the world. The results of TLD are in consistent with the online environmental monitoring. This preliminary research highlights the critical need for further studies on the measurement of external and internal dosimetry for terrestrial animals of this HNBRA.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":"541-551"},"PeriodicalIF":0.8,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144094357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The reformulated unified interaction model: simulations of linear/supralinear dose reponse in LiF:Mg,Ti, dose threshold for appearance of supralinearity and deviations from linearity in the dose range 0.1-10 Gy. 重新制定的统一相互作用模型：模拟LiF:Mg，Ti的线性/超线性剂量反应，0.1-10 Gy剂量范围内出现超线性和偏离线性的剂量阈值。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-06-05 DOI: 10.1093/rpd/ncaf058

Dmitry Nemirovsky, Leonid Oster, Yigal S Horowitz, Galina Reshes, Shlomo Biderman, Ilan Eliyahu, Hezy Einav, Beny Herman, Alex Shapiro

引用次数: 0

Numerical simulation study of power-frequency exposure to driving windings of electromagnetic suspension high-speed maglev trains. 电磁悬浮高速磁悬浮列车驱动绕组工频暴露数值模拟研究。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-06-05 DOI: 10.1093/rpd/ncaf017

Qiangqiang Pan, Mai Lu

{"title":"Numerical simulation study of power-frequency exposure to driving windings of electromagnetic suspension high-speed maglev trains.","authors":"Qiangqiang Pan, Mai Lu","doi":"10.1093/rpd/ncaf017","DOIUrl":"10.1093/rpd/ncaf017","url":null,"abstract":"As a potential mode of future passenger transport, the electromagnetic environment inside maglev trains is directly related to the safety and health of passengers. To study the electromagnetic exposure risk within the maglev train compartment, numerical models were established in this paper for the maglev track's long stator three-phase drive windings (serving as radiation sources), as well as for the train body and simplistic human body models representing passengers. The exposure levels of 50 Hz three-phase symmetrical current electromagnetic fields (EMFs) were numerically calculated for passengers positioned within the carriage. The numerical simulations focused on passengers' electromagnetic exposure resulting from the leakage of 50 Hz EMFs within the carriage and compared the results with established electromagnetic exposure limit guidelines. The findings indicated that the long stator three-phase drive windings generate electromagnetic leakage within the carriage, especially near the windows. Electromagnetic exposure levels vary, with passengers close to the windows experiencing more pronounced effects. Within the carriage, the maximum values of magnetic flux density (|B|) and induced electric field strength (|E|) for passengers' heads are ⁓0.59 μT and 337 μV/m, respectively. For passengers' torsos, the maximum values are ⁓1.53 μT for |B| and 57.8 μV/m for |E|. Passengers seated near the window exhibit higher values of |E| for their heads and higher values of |B| for their torsos. However, all of these values are well below the electromagnetic exposure limits (50 Hz) set by the International Commission on Non-Ionizing Radiation Protection. These findings provide valuable reference data for studying extremely low-frequency EMF exposure dosimetry in electromagnetic suspension high-speed maglev train systems.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":"552-567"},"PeriodicalIF":0.8,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144094568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An approach for annual analysis of EMF exposure in highly sensitive areas of kindergartens and schools. 幼稚园及学校高敏感地区电磁场暴露的年度分析方法。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-06-05 DOI: 10.1093/rpd/ncaf047

Dragan Kljajic, Nikola Djuric, Nicola Pasquino, Nunzia Solmonte, Snezana Djuric

{"title":"An approach for annual analysis of EMF exposure in highly sensitive areas of kindergartens and schools.","authors":"Dragan Kljajic, Nikola Djuric, Nicola Pasquino, Nunzia Solmonte, Snezana Djuric","doi":"10.1093/rpd/ncaf047","DOIUrl":"10.1093/rpd/ncaf047","url":null,"abstract":"Continuous increase of electromagnetic field (EMF) emission in the environment causes worldwide research on various short- and long-term EMF measurements and exposure assessments. Measurements are usually performed in sensitive areas, with conventional measuring approaches and worst-case exposure assessments, which are unable to provide any deeper EMF behavior analyses. Therefore, this paper brings an innovative EMF exposure analysis approach, based on time-averaging of time series data, disclosing some concealed information on long-term exposure. The averaging was done on the set of EMF time series acquired by three sensors in the EMF Regulatory Agency for Electronic Communications and Postal Services (RATEL) monitoring network. Sensors are installed at extremely sensitive locations-on buildings of two kindergartens and an elementary school. Analyses revealed patterns of daily/weekly exposure changes and their differences between working days and weekends, as well as annual decrease/increase, at each location. Comparative analysis among locations showed differences in exposure behavior regarding its peaks, slopes of the decrease/increase, and time intervals of the day with higher exposure.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":"577-588"},"PeriodicalIF":0.8,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144094266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fluorescence X-ray field for radiation dosemeters calibration. 用于辐射剂量计校准的荧光x射线场。

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-06-04 DOI: 10.1093/rpd/ncaf060

Tomoya Tsuji, Hiroshi Yoshitomi, Fuminobu Sato, Yoshihiko Tanimura

引用次数: 0